package servlet;

import pojo.Dept;
import service.DeptService;
import service.impl.DeptServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@WebServlet(urlPatterns = "/dept")
public class DeptServlet extends HttpServlet {
    DeptService deptService = new DeptServiceImpl();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        DeptService deptService = new DeptServiceImpl();
        req.setCharacterEncoding("utf-8");
        String action = req.getParameter("action");
        if("list".equals(action)){
            String dname = req.getParameter("dname");
            String position= req.getParameter("position");

            Dept condtion= new Dept(dname,position);

            List<Dept> depts = deptService.findAll(condtion);
            req.setAttribute("depts", depts);
            // 转发
            req.getRequestDispatcher("/list.jsp").forward(req, resp);
        }
        else if("add".equals(action)){
            String  ids  = req.getParameter("id");
            String dname = req.getParameter("dname");
            String position = req.getParameter("position");
            int id= Integer.parseInt(ids);
            int result = deptService.addDept(new Dept(id, dname, position));
            if (result > 0) {
                // 重定向  再次查询
                resp.sendRedirect("dept?action=list");
            } else {
                resp.sendRedirect("addDept.jsp");

            }
        }
        else if("delete".equals(action)){
            String sid = req.getParameter("id");
            Integer id= Integer.parseInt(sid);
            //根据id查询用户信息
            int result=deptService.deleteDeptById(id);
            if(result>0)
                req.getRequestDispatcher("/dept?action=list").forward(req,resp);
            else
                resp.sendRedirect("/error.jsp");
        }
        else if("update".equals(action)){
            String sid=req.getParameter("id");
            int id=Integer.parseInt(sid);
            //拿到页面传递的参数
            String dname = req.getParameter("dname");
            String position = req.getParameter("position");
            int result = deptService.updateDept(new Dept(id,dname, position));
            if(result>0) {
                resp.sendRedirect("dept?action=list");
            }
            else
                resp.sendRedirect("/error.jsp");
        }
        else if("toupdate".equals(action)){
            String sid = req.getParameter("id");
            Integer id= Integer.parseInt(sid);
            //根据id查询用户信息
            Dept dept=deptService.findById(id);
            //将对象存储在作用域中
            req.setAttribute("dept",dept);
            //转发到修改页面
            req.getRequestDispatcher("update.jsp").forward(req,resp);
        }
    }
}
